UBUNTU-CVE-2021-30027

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    UBUNTU-CVE-2021-30027

    Published: 29 Apr 2021Last Modified: 22 Apr 2026
    Upstream:
    CVE-2021-30027

    Summary:

    Details: md_analyze_line in md4c.c in md4c 0.4.7 allows attackers to trigger use of uninitialized memory, and cause a denial of service via a malformed Markdown document.

    References: https://ubuntu.com/security/CVE-2021-30027, https://github.com/mity/md4c/issues/155, https://github.com/mity/md4c/commit/4fc808d8fe8d8904f8525bb4231d854f45e23a19, https://www.cve.org/CVERecord?id=CVE-2021-30027

    Affected packages

    Package

    Name: md4c

    Purl: pkg:deb/ubuntu/[email protected]?arch=source&distro=focal

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    0.3.4-1

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    UBUNTU-CVE-2021-30027 | CVE-DB